export default function ({ isHMR, app, store, route, params, error, redirect }) {
  const defaultLocale = app.i18n.fallbackLocale
  // If middleware is called from hot module replacement, ignore it
  if (isHMR) return
  // Get locale from params
  // const locale = params.lang || defaultLocale
  // if (store.state.locales.indexOf(locale) === -1) {
  //   return error({ message: 'This page could not be found.', statusCode: 404 })
  // }
  // Set locale
  // store.commit('SET_LANG', locale)//cookie 得到
  // app.i18n.locale = store.state.locale//从store 获取；
  // if (locale === defaultLocale && route.fullPath.indexOf('/' + defaultLocale) === 0) {
  //   const toReplace = '^/' + defaultLocale
  //   const re = new RegExp(toReplace)
  //   return redirect(
  //     route.fullPath.replace(re, '/')
  //   )
  // }
}
